Supervision Cb Make Time Stage; Description - Siemens 6MD85 Manual

Siprotec 5 high-voltage bay controller

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Table of Contents

Measured Values, Energy Values, and Supervision of the Primary System

9.6 Circuit-Breaker Wear Monitoring

Supervision CB Make Time Stage

Logic of the Stage

[Lo_sup-cb-make-time, 1, en_US]

Operating Mode

The stage for the supervision of the circuit-breaker make time calculates the time between the circuit-breaker

closing command and the point in time when the current from at least one phase exceeds the

Oper.current threshold. If this threshold has not been exceeded after 2.5 times the value of the param-

eter CB make time, the measurement is canceled and the output value

with the quality invalid.

If at least one phase of the current has exceeded the parameter Oper.current threshold or the param-

eter Current thresh. CB open at the time of the circuit-breaker closing command, the measurement is

canceled and the output value

You can define 2 independent thresholds for the supervision of the measured make time. When these thresh-

olds are exceeded, the corresponding outputs

can be routed in the log.

Logic of the Supv.CB Make Time Stage

Make time is marked with the quality invalid.

Warning 1 and Warning 2 are activated for 100 ms. These

SIPROTEC 5, High-Voltage Bay Controller, Manual

Make time is set to 0 and marked

C53000-G5040-C015-9, Edition 11.2017